US3332406A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic speed control system
Assignee: Motors Liquidation Co
•
Filing: 1965-08-24
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Granted: 1967-07-25
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Expires: 1985-08-24
Abstract
No abstract record available.
Inventors
- 👤 Jack H Perry
- 👤 Ronald L Colling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:34
CPC Classifications
F; F02; F02D; F02D31/00; F02D31/001; F02D31/002
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
IN A MOTOR VEHICLE HAVING AN ENGINE AND PULSE GENERATING MEANS OPERATIVELY CONNECTED TO SAID ENGINE FOR DEVELOPING AN INPUT SIGNAL OF A FREQUENCY CORRESPONDING TO THE ACTUAL SPEED OF SAID ENGINES, ENGINE SPEED CONTROL MEANS COMPRISING PULSE SHAPING AND COUNTING MEANS CONNECTED TO SAID PULSE GENERATING MEANS FOR DEVELOPING A VOLTAGE PROPORTIONAL TO THE FREQUENCY OF SAID INPUT SIGNAL, MEANS FOR DEVELOPING A VOLTAGE PROPORTIONAL TO A DESIRED ENGINE SPEED, MEANS FOR DEVELOPING AN ERROR VOLTAGE REPRESENTING THE DIFFERENCE BETWEEN SAID ACTUAL ENGINE SPEED AND SAID DESIRED ENGINE SPEED, A VARIABLE DUTY CYCLE MULTIVIBRATOR RESPONSIVE TO THE ERROR VOLTAGE FOR DEVELOPING A SUBSTANTIALLY SQUARE WAVE OUTPUT SIGNAL OF CONSTANT FREQUENCY AND HAVING A DUTY CYCLE RELATED TO SAID ERROR VOLTAGE, A POWER UNIT RESPONSIVE TO THE OUTPUT OF SAID MULTIVIBRATOR FOR CONTROLLING THE THROTTLE POSITION OF SAID ENGINE.
Claim 2
Dependent Claim
139 words
IN A MOTOR VEHICLE HAVING AN ENGINE AND PULSE GENERATING MEANS OPERATIVELY CONNECTED TO SAID ENGINE FOR DEVELOPING AN INPUT SIGNAL OF A FREQUENCY CORRESPONDING TO THE ACTUAL SPEED OF SAID ENGINES, ENGINE SPEED CONTROL MEANS COMPRISING PULSE SHAPING AND COUNTING MEANS CONNECTED TO SAID PULSE GENERATING MEANS FOR DEVELOPING A VOLTAGE PROPORTIONAL TO THE FREQUENCY OF SAID INPUT SIGNAL, MEANS FOR DEVELOPING A VOLTAGE PROPORTIONAL TO A DESIRED ENGINE SPEED, MEANS FOR DEVELOPING AN ERROR VOLTAGE REPRESENTING THE DIFFERENCE BETWEEN SAID ACTUAL ENGINE SPEED AND SAID DESIRED ENGINE SPEED, A VARIABLE DUTY CYCLE MULTIVIBRATOR RESPONSIVE TO THE ERROR VOLTAGE FOR DEVELOPING A SUBSTANTIALLY SQUARE WAVE OUTPUT SIGNAL OF CONSTANT FREQUENCY AND HAVING A DUTY CYCLE RELATED TO SAID ERROR VOLTAGE, A POWER UNIT RESPONSIVE TO THE OUTPUT OF SAID MULTIVIBRATOR FOR CONTROLLING THE THROTTLE POSITION OF SAID ENGINE.
References Cited (Backward Citations)
US3088538A
Cited
US3153746A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-24 | 1971-01-23 | 1971-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-24 | 1975-01-23 | 1975-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-24 | 1979-01-23 | 1979-07-25 | $7700.00 | Window Closed / Lapsed |